Re: standard performance (write speed 65Mb/s)

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On 7/21/2011 12:57 PM, Pol Hallen wrote:

> dd if=/dev/zero of=/dev/md0 bs=1024M count=10
> 10+0 records in
> 10+0 records out
> 10737418240 bytes (11 GB) copied, 166.042 s, 64.7 MB/s

Do you not recall that I explained in detail, not two days ago, why you
should not use a 1GB block size when testing with dd in this manner?
And don't do this with the raw device.  The resulting numbers, no matter
how large or small, are irrelevant.

*Put a filesystem on md0* and do:

~$ dd if=/dev/zero of=/some/dir/test.dd bs=4096 count=2621440

And why on earth would you bother running this test while the array is
still building?  Again, the resulting figure is worthless to everyone.

-- 
Stan
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